Hyundai has a new concept for the car of tomorrow - and it doesn't involve wheels.

The 'E4U' is an egg-shaped, open-topped single person transport similar to a Segway.

But instead of a traditional two-wheel design, the E4U uses a "rotating semispherical part" like the lower half of a ball, which is constantly spinning. The vehicle is static when standing vertically, and when it is tilted forward it moves at about walking speed.

The idea is to have a vehicle which can move in multiple directions without turning - but the car is in the early stages of development, and currently has two safety wheels at the rear which stop it tipping from side to side.

The driver turns the car by tilting it with his or her feet, according to Tech On Nikkei.